I have since learned from one of my gunmaker friends in Birmingham, UK that re-proofing is not required by UK proof houses on re-case hardened actions.
This fact is counter intuitive to reasonable thought to my mind as a re-case hardened action is brought up to a temperature of nearly 1500F degrees and then stressed severely by being submersed in cold water.
I stand corrected and gobsmacked.
I don't understand that reasoning, bushveld. If it was casehardened in that exact same way when built new, why would it be any more unsafe when done so again? Before it is (re)casehardened it is annealed, which supposedly relieves it of all internal stresses, basically putting it back in the same state it was in before being casehardened the first time. Unless there's something I'm misunderstanding about it?
Maybe that is the reason the proof house has the stance it does concerning it.
SRH
